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CheckWeather USCasa Grande
Forecast confidence: High · models disagree by 1°F

Casa Grande weather

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Partly cloudy,much the same tomorrow

NWS, the American and the European model agree on a high near 100° in Casa Grande today. Tomorrow looks cloudy around 103°, with a 4% chance of rain.

100°80°
103°80°
103°81°
104°84°
102°85°
103°85°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaysplit ±5°Wednesdaymodels agreeThursdaysplit ±7°
NWSNational Blend (NBM)
100°
Partly cloudy
Today 100°·Low 77°·Rain 2%
AmericanNOAA GFS
101°
Partly cloudy
Today 101°·Low 80°·Rain 2%
EuropeanECMWF
100°
Light drizzle
Today 100°·Low 84°·Rain 10%

The weather map: all three models at once

NWS, American, European side by side around Casa Grande and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Partly cloudy
100° 80°
models agree
Tomorrow
Cloudy
103° 80°
models agree
Mon
Partly cloudy
103° 81°
models agree
Tue
Cloudy
104° 84°
±5°
Wed
Cloudy
102° 85°
models agree
Thu
Cloudy
103° 85°
±7°
Fri
Drizzle
99° 83°
±7°
Sat
Drizzle
96° 79°
±6°
Sun
Mostly clear
95° 79°
±8°
Mon
Light drizzle
96° 80°
±7°
Tue
Light drizzle
97° 79°
±8°
Wed
Drizzle
98° 82°
±7°
Thu
Heavy drizzle
95° 78°
models agree
Fri
Cloudy
97° 77°
models agree

Casa Grande, AZ is at its warmest in Jul (average highs near 109°F) and coldest in Jan (lows around 40°F), with roughly 7 in of precipitation across the year. Below, compare what NWS, American, European forecast for Casa Grande right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Casa Grande climate by month

average daytime high and overnight low across a typical year
Jan
62°
40°
Feb
67°
43°
Mar
72°
48°
Apr
85°
56°
May
94°
67°
Jun
103°
76°
Jul
109°
85°
Aug
105°
83°
Sep
102°
76°
Oct
93°
65°
Nov
75°
49°
Dec
69°
43°

Which forecast is most accurate in Casa Grande?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
85
/100rank #1
92±0.8°F93±2.2 mph7184% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
78
/100rank #2
88±1.2°F89±3.3 mph5877% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°100° to 101°±8%2% to 10% chance
Tomorrow±2°102° to 103°±4%0% to 4% chance
Mon±4°101° to 105°±9%2% to 11% chance
Tue±5°102° to 108°models agree6% to 6% chance
Wed±3°100° to 103°±9%12% to 21% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Casa Grande

today, local time
Sunrise
06:04
Sunset
18:46
Daylight
12h 42m

Common questions

What's the weather in Casa Grande today?
On this page we show what NWS, American, European each forecast for Casa Grande today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Casa Grande today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Casa Grande and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Casa Grande?
Over the last 30 days, the European model has been the most accurate for Casa Grande (CheckWeather Score 85/100), ahead of the American at 78. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Casa Grande?
July is typically the warmest month in Casa Grande, with average highs around 109°F.
How cold does Casa Grande get?
The coldest month in Casa Grande is January, when overnight lows average about 40°F.
How much rain does Casa Grande get?
Casa Grande sees roughly 7 in of precipitation a year, with January usually the wettest month.

Nearby

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